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Home My WebLink About298 Grenada Hill Wy - 210712105002 - 1764-98ISINDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT EAGLE COUNTY ENVIRONMENTAL HEALTH DIVISION P.O. Box 179 - 500 Broadway • Eagle, CO 81631 Telephone: (970) 328-8755 COPY OF PERMIT MUST BE POSTED AT INSTALLA TION SITE. PERMIT NO. 1764-98 BP NO. 11836 OWNER: HARRY AND LESLIE PHILIP PHONE: 516-627-4933 MAILING ADDRESS: 591 PARK AVE._, MANHASSET, NY 11030 APPLICANT: DAVID NOWAKOWSKI, SIGNATURE HOMES PHONE: 926-4329 SYSTEM LOCATION: 298 GRANADA HILL WAY, CORDILLERA TAX PARCEL NO. 2107-121-05-002 LICENSED INSTALLER: STENSON EXCAVATING, BILL STENSON LICENSE NO. 34-98 PHONE: 970-926-3849 DESIGN ENGINEER: ENGINEER DESIGN WORKS, CRAIG FRITHSEN PHONE NO. 970-879-4890 INSTALLATION HEREBY GRANTED FOR THE FOLLOWING: 1500 GALLON SEPTIC TANK 1394 SQUARE FEET OF TRENCH ABSORPTION AREA VIA 44 E036 INFILTRATOR UNITS AS PER DESIGN. SPECIAL REQUIREMENTS: INSTALL AS PER ENGINEER'S DESIGN DATED 4-3-1998. MAINTAIN 4' SEPARATION TO BEDROCK, AND INSTALL ALONG THE CONTOURS OF THE SLOPE. ENGINEER IS RESPONSIBLE FOR FINAL INSPECTION OF THE INSTALLATION. BUILDING CERTIF- ICATE WILL NOT BE ISSUED WITHOUT FINAL APPROVAL OF SEPTIC SYSTEM. ENVIRONMENTAL HEALTH APPROVAL: DATE: APRIL 16, 1998 CONDITIONS: 1. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS, ADOPTED PURSUANT TO AUTHORITY GRANTED IN 25-10-104, 1973, AS AMENDED. 2. THIS PERMIT IS VALID ONLY FOR CONNECTION TO STRUCTURES WHICH HAVE FULLY COMPLIED WITH COUNTY ZONING AND BUILDING REQUIREMENTS, CONNECTION TO OR USE WITH ANY DWELLING OR STRUCTURE NOT APPROVED BY THE ZONING AND BUILDING DEPARTMENTS SHALL AUTOMATICALLY BE A VIOLATION OF A REQUIREMENT OF THE PERMIT BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT. 3. CHAPTER IV, SECTION 4.03.29 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM TO BE LICENSED. FINAL APPROVAL OF SYSTEM (TO BE COMPLETED BY INSPECTOR): NO SYSTEM SHALL BE DEEMED TO BE IN COMPLIANCE WITH THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS UNTIL THE SYSTEM IS APPROVED PRIOR TO COVERING ANY PORTION OF THE SYSTEM. INSTALLED ABSORPTION OR DISPERSAL AREA: 1488 SQUARE FEET (VIA 48 STANDARD INFILTRATOR UN)TTS INSTALLED SEPTIC TANK: 1500 GALLONS IS LOCATED 90 DEGREES AND 30 FEET FROM FROM THE SOUTHWEST CORNER OF THE MASTER BEDROOM. COMMENTS: ENGINEER FINAL CERTIFICATION RECEIVED 8-28-98. ANY ITEM NOT MEETING REQUIREMENTS WILL BE CORRECTED BEFORE FINAL APPROVAL OF SYSTEM IS MADE. ARRANGE A RE -INSPECTION WHEN WORK IS COMPLETED. ENVIRONMENTAL HEALTH APPROVAL �� DATE: AUGUST 31, 1998 111U U1LL�ICLC ti.P �l11UCiL-LU1i6 w111 vu-i- be Accepr-ect (Site Plan MUST be attached) ISDS Permit # r`7 J q Building Permit # 11/ - APPLICATION FOR INDIVIDUAL SEWAGE DISPOS,`-L SYSTEM PERMIT ENVIRONMENTAL HEALTH OFFICE - EAGLE COUNTY P. O. BOX 179 EAGLE, CO 81631 328-8755/927-3823 (El Jebel) * PERMIT APPLICATION FEE $150.00 PERCOLATION TEST FEE $200.00 * * * MAKE ALL REMITTANCE PAYABLE TO: "EAGLE COUNTY TREASURER" PROPERTY OWNER: P vI "'" L �4 1 LI P MAILING ADDRESS: 5%/ l�fj 2�, I�r�N ��jq5 I� K /U3p PHONE :(,27- 4--133 APPLICANT/CONTACT PERSON: �i�yiDC owCtY�jw�i[_ ��(,►�rMu )i PHONE: 12b'#3zG LICENSED SYSTEMS CONTRACTOR: PHONE: COMPANY/DBA : ADDRESS: P U' 9d?1- 57(1 PDL-A" St j�o g) lo,3Z . *************************************************************************** PERMIT APPLICATION IS FOR: k)",NEW INSTALLATION ( ) ALTERATION ( ) REPAIR LOCATION OF PROPOSED INDIVIDUAL SEWAGE DISPOSAL SYSTEM: Legal Description: t Oi- Tax Parcel Number: ZW7 JZI 06- Lot Size: 3 8 Acrz� Physical Address: 4(Lt, • W `1 BUILDING TYPE: (Check applicable category) Residential/Single Family Number of Bedrooms ( ) Residential/Multi-Family* Number of Bedrooms ( ) Commercial/Industrial* Type TYPE OF WATER SUPPLY: (Check applicable category) ( ) Well ( ) Spring ( ) Surface Public Name of Supplier: *These systems require Jdesign by a Registered Professional Engineer SIGNATURE:'v Date: 7�18 AMOUNTPAID: ************************I**e* b#'Nf* RECEIPT DATE: CHECK #: (I � ��1� C� CASHIER: � Community Development Department . (970) 328-8730 Fax: (970) 328-7185 TDD: (970) 328-8797 Date: April 16, 1998 TO: Stenson Excavating Eagle County Building P.O. Box 179 500 Broadway Eagle, Colorado 81631-0179 FROM: Environmental Health Division RE: Issuance of Individual Sewage Disposal System Permit No. 1764-98. Tax Parcel # 2107-121-05-002. Property Location: 298 Granada Hill Way, cordillera, Edwards, CO., Philip residence. Enclosed is your ISDS Permit No. 1764-98. It is valid for 120 days. The enclosed copy of the permit must be posted at the installation site. Any changes in plans or specifications invalidates the permit unless otherwise approved. Systems designed by a Registered Professional Engineer must be certified by the Engineer indicating that the system was installed as specified. Eagle County does not perform final inspections on engineer designed systems. Your TCO will not be issued until our office receives this certification. Permit specifications are minimum requirements only, and should be brought to the property owner's attention. This permit does not indicate conformance with other Eagle County requirements. If you have any questions, please feel free to contact the Environmental Health Division at 328- 8755. cc: files Engineer Designworks, Inc., Craig B. Frithsen Community Development Department (970)328-8730 FAX (970) 328-7185 TDD (970) 328-8797 Email: eccmdeva@vail.net http: //www.eagle-county.com EAGLE COUNTY, COLORADO August 31, 1998 Harry and Leslie Philip 591 Park Ave. Manhasset, NY 11030 Eagle County Building P.O. Box 179 500 Broadway Eagle, Colorado 81631-0179 RE: Final of ISDS Permit #1764-98, Tax Parcel #2107-121-05-002. Property location: 298 Granada Hill Way, Edwards, CO. Dear Mr. & Mrs. Philip: This letter is to inform you that the above referenced ISDS Permit has been inspected and finalized. Enclosed is a copy to retain for your records. This permit does not indicate compliance with any other Eagle County requirements. Also enclosed is a brochure regarding the care of your septic system. Be aware that later changes to your building may require appropriate alterations of your septic system. If you have any questions regarding this permit, please contact the Eagle County Environmental Health Division at (970) 328-8755. Sincerely, jpa- Janet Kohl Environmental Health Department Eagle County Community Development ENCL:Informational Brochure Final ISDS Permit cc: files ,;UL- L-t -1.117Q L U - 'JI4 ID4UH."IUMM MUFIr-111) r. ul:� ENGINEEPZ� NG OESIGNWORKS. INC. loot,, Lior,'5 Ridge Loop, Suite 36 30960 moff*t Avonvc Pest oflfirp Rax 927 Post Office Sox 775729 Vail, Colorado 81658 Steamboat Springs, Caorpdo $0477 (970)476-4855 (970)879-4,59U (9710)§49-482.3 (cA-0)47- 43016 (970 87 9,- 4905 Fax June 4,1998 Reference: Philip Residence ISDS Lot 7�, Cordillera, Filing 3 Eagle icaunty, colomdo i (Eng"I'eering Designworks Job #9801) TO Wl om it may concern: At the request of the Ituldcr we have modiflod our ISDS design to employ LiTililuatui H-10 charribers in place of the InfiltraLor Equalizer 36 c1arn bers originally specified. Please note the follo-wing design revisions required by this civange due to the diftercnt size and absorptive area per UiIiL Of LIP: H-10, ,kbzorptive area per Infiltrator H-10 unit ;;: 3094 5q A Infiltrator H-10 units required = 1594 sq ft 130.94 sq fJunit = 46 Wuls Use 48 units for 4 equimIctit trenches Trench length rcquircd to accommodate 48 units = 48units x 6,25 Wuiat = 300 It Maximum trench length = 100 ft Therdorc use 4 trenches 75 ft t*ch Thank you for your attention to these details. Ifyou have any questiows or concerns picase do not liesitatc to call, us at 970-8794890- sinc*ly yours, crm'g' B. Frithsen for Bngi=ring, Desipiworks Rcvie.wad by Steven G. Le,%Nis PE L;0 TOTAL P.02 AN A EngineeringLit AM I SOILS AND FOUNDATION INVESTIGATION • PROPOSED RESIDENCE LOT 79, CORDILLERA FILING NO, 3 EAGLE COUNTY, COLORADO RICHARD COHEN PROJECT NO. 94752G SEPTEMBER 30, 1994 _ =_ //,/,��ss� 0i i I�i i��`` 77 Metcalf Road, #200 - Box 978 - Avon, Colorado 81620 • Phone: 949-5072 • From Denver Direct: 893-1531 1420 Vance Street - Lakewood, Colorado 80215 • Phone: 232-0158 TABLE OF CONTENTS CONCLUSIONS 2 SCOPE 2 SITE LOCATION AND DESCRIPTION 3 SITE INVESTIGATION 3 SUBSURFACE AND GROUNDWATER CONDITIONS 4 PERCOLATION TEST 4 PROPOSED CONSTRUCTION 5 FOUNDATION RECOMMENDATIONS 5 SLAB CONSTRUCTION 6 GROUNDWATER AND DRAIN SYSTEM 7 REINFORCING 7 CRAWL SPACE COVER 8 BACKFILL AND SURFACE DRAINAGE g LAWN IRRIGATION 9 MISCELLANEOUS 9 LOCATION OF TEST PITS DRAWING NO. 1 SUMMARY OF TEST PITS FIGURES NO. 1 - 2 SWELL -CONSOLIDATION FIGURE NO. 3 PERIPHERAL DRAIN SYSTEM FIGURE NO. 4 CONCLUSIONS 1. Subsoil conditions are fairly uniform over the site. Test Pit No. 1 had 0.5 foot of Topsoil over 1.5 feet of silty gravelly SAND over 6 feet of firm weathered shale and siltstone BEDROCK. Test Pit No. 2 had 0.5 feet of Topsoil over 4.5 feet of gypsiferous silty gravelly SAND over 1.5 feet of weathered siltstone and shale BEDROCK over 2.5 feet of gypsiferous gravelly sandy SILT (weathered siltstone). 2. The proposed residence should be founded on the undisturbed firm weathered BEDROCK with conventional spread footings designed for a maximum soil bearing pressure of 2,000 psf. 3. The proposed leachfield area had an average percolation rate of 15 minutes per inch. 2 This report presents the results of a Soils and Foundation Investigation for the proposed residence to be constructed on Lot 79, Cordillera Filing No. 3, Eagle County, Colorado. The investigation was prepared by means of test pits, and laboratory testing of samples obtained from these pits. The purpose of this foundation exploration was to determine the various soil profile components and the engineering characteristics of the foundation materials, and to provide criteria from a geotechnical point of view, for use by the structural engineers in preparing the foundation design, and the design engineers and architects in preparing grading and drainage 3 plans. SITE LOCATION AND DESCRIPTION The site is a 3.797 acre lot located at 298 Granada Hill in the Cordillera Subdivision near Edwards, Eagle County, Colorado. The topography of the lot slopes steeply to the west. The vegetation consists of dense shrubs and low grasses. Drainage is to the west. The lot is vacant. SITE INVESTIGATION The field investigation performed on September 14, 1994 consisted of excavating, logging and sampling 2 test pits and a profile hole for the leachfield. The locations of the test pits and profile hole are shown on Drawing No. 1. The pits were excavated with a conventional backhoe. Summaries of the test pit logs are detailed on Figure No.'s 1 & 2. Laboratory samples were obtained at selected intervals by driving a "California" hand sampler into undisturbed soil. Granular soils were sampled by bulk sampling. These samples were returned to our laboratory, inspected and classified in accordance with the Unified soil Classification System and the test pit logs were edited as necessary. To aid in classifying the soils encountered, and to determine general soil characteristics, selected laboratory tests (moisture content, unit weight, swell/consolidation) , were performed on representative soil samples. Summaries of the test results are shown on Figure No. 3. 4 SUBSURFACE AND GROUNDWATER CONDITIONS Refer to the summary of test pits, Figure No.'s 1 & 2. Subsurface conditions are fairly uniform. Test Pit No. 1 had 0.5 foot of Topsoil over 1.5 feet of silty gravelly SAND over 6 feet of firm weathered shale and siltstone BEDROCK. Test Pit No. 2 had 0.5 feet of Topsoil over 4.5 feet of gypsiferous silty gravelly SAND over 1.5 feet of weathered siltstone and shale BEDROCK over 2.5 feet of gypsiferous gravelly sandy SILT (weathered siltstone). We understand that no overlot grading has been done prior to this investigation. No Groundwater was encountered in any of the test pits at the time of excavation. Indexes to Geological Mapping, Eagle County, Colorado, prepared by Charles S. Robinson & Associates, INC., in 1975, states that the underlying bedrock is Maroon Formation which contains siltstone, silty sandstone, and arkosic sandstones. PERCOLATION TEST As required by Eagle County Board of Health, one profile and three percolation holes were dug to determine the soil profile and percolation rate of the existing soils in the proposed leachfield area. See Drawing No. 1 for the location. The leach pit had a profile similar to the test pits with 1 foot: of Topsoil over 4 feet of gypsiferous silty gravelly SAND over 3 feet of gypsiferous sandy silt with rock fragments. The percolation rate of percolation hole No.'s 1, 2 and 3 5 were 18.5, 11.9 and 13.9 minutes per inch, respectively. The average percolation rate (design value) :,is 15 minutes per inch which is within the Eagle County Environmental Health Division acceptable range from 5 to 60 minutes per inch. PROPOSED CONSTRUCTION No specific design data has been provided, but for the purpose of this analysis, it has been presumed that the proposed residence will consist of 2 floors without a basement, and that loads will be light. If the proposed project differs significantly from this understanding, a review should be made after the plans are more complete. FOUNDATION RECOMMENDATIONS Silty gravelly SAND, weathered BEDROCK and gravelly sandy SILT will be encountered in the foundation excavation. The proposed residence should be founded on conventional type spread footings designed for a maximum soil bearing pressure of 2,000 psf. The footings should be constructed on the undisturbed firm weathered BEDROCK. The footing excavations should be relatively smooth, free of debris, organics, loose soil, frost, and standing water. Any over - excavations should be backfilled and compacted to 100 percent within 2 percent of optimum moisture as determined by a Standard Proctor Test (ASTM D-698). A representative of this office should be contacted to inspect the foundation excavation to verify that- 6 the soil conditions are the same as those anticipated in this report. After all of the final grading is completed, the bottom of the footings should be covered with a minimum of 48 inches of backfill for frost protection. Voids left by the removal of cobbles in the bottom of the footing excavation should be filled with lean concrete or a granular soil with a maximum particle size of 3 inches compacted to 100 percent of Standard Proctor Density (ASTM D-698), within 2 percent of optimum moisture. SLAB CONSTRUCTION All excavations made for the foundations under proposed slar- on-grade areas must be properly backfilled with suitable material compacted to a minimum of 95 percent of the maximum Standard Proctor Density (ASTM D-698). The on -site soils, exclusive of topsoil and organics are suitable for use as backfill. Due to the high content of cobbles and boulders, it will be necessary to screen out rocks larger than 3 inches prior to using this material as backfill. Before the backfill is placed, all water and loose debris should be removed from these excavations. Prior to the construction of concrete floors, the undisturbed subgrade, free from topsoil and organics, should be proof compacted with a loaded rubber -tired loader to a uniform high density. Special care should be taken in areas where underground utilities have been installed. The floor slabs should be reinforced, and joints should be provided at the junctions of the slab and the foundation walls, so that a small amount of independent movement can occur without causing damage. The slabs should be scored in accordance with the American Concrete Institute's recommendations to control cracking. A granular mat (-3J4 inch gravel, with less than 5 percent passing No. 200 sieve), should be provided below the floor slabs. This should be a minimum of four inches in thickness. The purpose of this granular mat is to provide a capillary break between the subgrade and the slab. GROUNDWATER AND DRAIN SYSTEM While no ground water was encountered at the time the field investigation was conducted, it is possible that seasonal variations will cause fluctuations, or for a water table to be present in the upper soils during the spring months, or after prolonged periods of rain. A foundation perimeter drain as detailed on Figure No. 4 is recommended to reduce the risk of surface water infiltrating the footing subsoils. REINFORCING The foundation should be well reinforced and rigid enough to withstand differential settlements. Foundation walls retaining earth -should be designed to resist an equivalent fluid pressure of 40 pcf for an "active" case assuming a level drained backfill condition. 8 CRAWL SPACE COVER When moist soils are encountered in the excavation, the ground surface in crawl space areas should be covered with an impervious moisture barrier sealed against the footings. This will help to reduce humidity in the crawl space area. The crawl space should be vented. BACRFILL AND SURFACE DRAINAGE The backfill placed around the foundation walls should not settle excessively after completion of construction and the top one foot of the backfill material must be relatively impervious. The on -site soils, exclusive of Topsoil and organics are suitable for use as backfill. Due to the high content of cobbles and boulders, it will be necessary to screen out rocks larger than 6 inches prior to using this material as backfill. Backfill should be moistened or dried to near its optimum moisture content and compacted to at least 90 percent of the maximum Standard Proctor Density. Structural backfill should be compacted to at least 95 percent of the maximum Standard Proctor Density. Surface water running toward the structure from upslope areas should be diverted around and away from the building by means of drainage swales or other similar measures. _The final grade should have a positive slope away from the foundation walls on all sides. A minimum of 12 inches in the first 10 feet is recommended. Downspouts and sill cocks should discharge 9 into splash blocks that extend beyond the limits of the backfili. The use of long downspout extensions in place of splash blocks is advisable. LAWN IRRIGATION Do not install sprinkler systems next to foundation walls, porches or patio slabs. If sprinkler systems are installed, the sprinkler heads should be placed so that the spray from the heads, under full pressure, does not fall within five feet of foundation walls, porches or patio slabs. Lawn irrigation must be controlled. If the future owners desire to plant next to foundation walls, porches or patio slabs, and are willing to assume the risk of structural damage, etc., then it is advisable to plant only flowers and shrubbery (no lawn) of varieties that require very little moisture. These flowers and shrubs should be hand watered only. MISCELLANEOUS The recommendations provided herein are based on experience in the area and from the on -site field exploration. The information obtained form the field exploration and laboratory testing reflects subsurface conditions only at the specific locations at the particular times designated. Subsurface conditions at other locations and times may differ from the conditions at these locations. The extent of any variations between the test pits may not appear evident until excavation is performed. However, only minor variations are expected. If during construction conditions 10 appear to be different, this office should be advised so re- evaluation of the recommendations may be made. This report has been prepared for the exclusive use of Richard Cohen for the specific application to the proposed residence structure to be located on Lot 79, Cordillera Filing No. 3, Eagle County, Colorado. The findings and recommendations of this report have been prepared in accordance with locally accepted professional engineering standards for similar conditions at this time. There is no other warranty, either expressed or implied. Sincerely, INTER -MOUNTAIN ENGINEERING, LTD. Martha L. Miller, P.E. Reviewed by: (�e 2� "'q� Luiza-Petrovska, P.E. Project Engineer a x / LOT 80 TEST P/T1 z CSUILDING ENVELOPE TEST PIT ,3V2 LEACH PI T—PERC 12 p ?C PERC yt PERC 13 �LOT 79 Q LOT 76 LOT 78 \ LOCATION OF TEST PITS PROPOSED RESIDENCE LOT 79, CORDILLERA FILING NO, 3 EAGLE COUNTY, COLORADO PREPA FOR: RICHARD COHEN PROJECT NO.:94752G DRAWN 8Y: MLM SCALE: N1„ = 50, DATE: 91 J0 1 94 DRAWING NO.: 1 PlT NO. 1 4. a� T O � '? OE 0£SCRIPTION OF MATERIALH FEETET h 0 v Q Topsoil Silty gravelly SAND Light brown IV 1m 115- Xwmmmm Firm weathered shale and Grayish -black siltstone BEDROCK, slightly gypsiferous Bottom of Pit Bulk sample No Groundwater Encountered REMARKS SUMMARY OF TEST PITS MrU Proposed Residence Lot 79, Cordillera Filing No. 3 -A Eagle County, Colorado Prepared for: Richard Cohen PROJECT Hat 94752G FIGURE NO.- 1 P1 T NO. 2 lee&11'�Pl INOFcj DESCRIPTION OF MATERIAL RE1t:RKS Q Topsoil Gypsiferous silty gravelly Light brown. Firm SAND to gravelly sandy SILT 96.3 pcf w--5.7% 5 Weathered siltstone and Gray -black - shelf ® shale BEDROCK 1.. 1 Gypsiferous gravelly sandy Light brown :•ti SILT (Weathered • siltstone) _ �. •' 1. — 101.1pcf c: 7.7�0 Bottom of Pit No Groundwater 10 Encountered 15 Relatively undisturbed sample Bulk sample y SUMMARY OF TEST PITS Proposed Residence Lot 79, Cordillera Filing No. 3 Eagle County, Colorado Prepared for: Richard Cohen PROJECT Na: 94752G FIGURE NO., 2 0 -1 -2 J J Uj -3 N z C1 -4 Q -5 J O z 0 -6 U 0.1 SAMPLE OF % SWELL/CONSOL. m -2 J J W -3 z -4 0 Q -5 0 0 z O -6 U Pit No. 2 DEPTH 4' 1.0 LOAD (KSF) 10 100 Gravelly sandy SILT NAT. MOISTURE CONTENT 5.7 _SAMPLE FLOODED AT 1.0 KSF NAT, DRY DENSITY96.3 PCF •Pit No. 2 DEPTH 81 0.1 1.0 LOAD (KSF) 10 100 SAMPLE OF Gravelly sandy SILT NAT. MOISTURE CONTENT 7.7 % % SWELL/CONSOL. SAMPLE FLOODED AT 1.0 KSF NAT. DRY DENSITY 101.1 PCF SWELL - CONSOLIDATION TEST RESULTS Proposed Residence rA Lot 79, Cordillera Filing No. 3 Eagle County, Colorado Prepared for: Richard Cohen PaOJECT NO 94752G FIGUaE NO 3 FOUNDATION WALL - TOP ONE FOOT OF BACKFILL SHOULD BE RELATIVELY IMPERVIOUS FILL. SLOPE AWAY FROM BUILDING. GRANU��F L- I Lf GEOTEXTILE (_MIRAFI 140N OR tQUIVILANT) POLYETHELENE MOISTURE BARRIER GLUED TO FOUNDATION WALL. MINUMU10 OF 6" OF 3/4 INCH. GRAVEL 4" DIAMETER PERFORATED RIGID -PIPE SLOPED SEWER OF 1/8" PER FOOT TO SEWER LATERAL SUBDRAIN SUMP PUMP OR DAYLIGHTED. DETAIL OF PERIPHERAL DRAIN SYSTEM FOR FOOTING TYPE FOUNDATION Figure : 4 Project No. 94752C Proposed Residence Lot 79, Cordillera Filing NO. 3 Eagle County, Colorado Prepared for: Richard Cohen ENGINEERING DESIGNWORKS, INC. Professional Engineering & Drafting Services P.O. Box 775729 • 1051 1 3th Street Steamboat Springs, CO 80477 edwco@compuserve.com Phone 970.879.4890 Fax 970.879.4905 July 15, 1998 Eagle County Environmental Health Department PO Boa 179 Eagle, CO 81631-0179 (Eagle County Permit # 1764-98) Reference: Philip Residence ISDS Lot 79, Cordillera, Filing 3 Eagle County, Colorado (Engineering Designworks Job #9801) To whom it may concern: We inspected the ISDS system at the above referenced site on 7/15/98 and found the system, as installed to be in compliance with our design. The serial trench system has an installed absorption area of 1485 square feet ( 48 Infiltrator H-10 units, 12 each of 4 trenches). The 1500 gallon tank is located 90 degrees and 30 feet from the southwest corner of the master bedroom. Profile pits flanking the absorption trenches verified the required 4' clearance from bottom of trench to bedrock, and the trenches followed the contours as we specified. Thank you for your attention to these details. If you have any questions or concerns please do not hesitate to call us at 970-879-4890. Sincerely yours, Craig B. Frithsen for Engineering Designworks Reviewed by Steven G. Lewis PE O R — U• �65 Individual Sewage Disposal System for Proposed Philip Residence Lot 19, Cordillera, Filing 3 Eagle County, Colorado April 3, 1998 Project #9801sw Prepared for: Signature Homes 34215 US Hwv 6, Suite 205 Edwards, CO 81632 GENERAL This report details the design and construction of a serial trench sewage disposal system to be located at Lot 79, Cordillera, Filing 3, Eagle County, Colorado. This design is based on Intermountain Engineering's soils/percolation report # 94752G dated September 30, 1994 and on Michael Sanner's site and architectural plans dated February 19, 1998. The ISDS will be located to the southwest of the proposed structure as detailed in the included site plan. The undisturbed ISDS location is sloped approximately 31% to the northwest, and is covered with dense shrubs and low grasses. It should be noted that the sewage disposal system will be located approximately 100' to the southwest of the location of the percolation test. This relocation is necessary due to the placement of the house on the percolation test site. A review of the soils report indicates similar soil..types.were_found.across_tb.e: site -with the main concern being the-vanation of dgpe th to bedrock. fWe recommend the excavator verify the soils in the relocated ISDS area are similar in profile and type to those described by Intermountain Engineering gineering in their percolation report and contact us should this not be the case. DESIGN CALCULATIONS The proposed residence is a singh- f —" future. The home will alsc it A" k A Design # of people = 10 Design sewage quantity @ Design BODS LBS @ .20 /P Design load factor: I.' Serial trench ISDS Design floc Average percolation rate (T) _ Serial trench absorption area (A Modification factor for washing i Serial trench modified absorption Required septic tank size = 1500 C This ISDS will employ Infiltrator E Department of Public Health and Er, area per unit. # Infiltrator Equalizer 36 units requir Trench length required to accommoda Maximum trench length = 100 ft Therefore use 4 trenches 91 ft each ly t (SO0 LTA 3� �f3 C� 'h Engineering Designworks, Job # 9801 SW, 04/03/98, Page 2 in the CONSTRUCTION SPECIFICATIONS 1) All regulations of the Eagle County Department of Environmental Health and the Colorado Department of Health shall be strictly adhered to. 2) Divert all surface drainage from the ISDS area. 3) Septic tank shall be rated at 1500 gallon capacity, and shall meet Colorado Department of Health design criteria. 4) Use watertight 4" diameter PVC pipe (ASTM 2729) for septic tank inlet and effluent lines, and for lines connecting trenches. Grade these lines 1/8" per foot minimum. 5) Use Infiltrator Equalizer-36 chambers (44 total units) placed in absorption trenches as shown by detail pages included in this report. Use raised invert end plates at all inlet and outlet units. Use closed end plate at downstream end of lowest trench. Install Infiltrator system per manufacturers instructions. 6) ISDS system shall be located the following minimum distances from pertinent features. Engineer has designed this system taking into account these distances, but contractor must verify the ISDS is located appropriately a) springs, wells, suction devices: 100' b) potable water supply line: 25' c) potable water supply cistern: 25' d) dwelling, occupied building: 20' e) propej�ty lines: 10' , fl subsoil drains: 10' g) lake, water course, irrigation ditch, stream: 50' h) dry gulches: 25' i) septic tank: 10' 7) Maintain 4' minimum clearance from bottom of absorption trench to bedrock below. 8) Provide 6" soil cover over septic tank. (sty-- �`;•'' c .• •% Engineering Designworks, Inc. Craig B. Frithsen, Project Engineer 0�• 5��v -% • p Reviewed. ' Steven G. Lewis, P.E. 9965 ^:• .� ss CrJAl- EngineeringDesignworks, Job # 9801SW, 04/03/98, Page 3 2' wide Ax 3' deep x 101' long trenches O LL- 10' minimum I distance to septic tank ri IMM start of tre n ch 4!'PVC 4, PVC U 7:1 0 4!'PVC 21 0 1 )Infiltrator Equalizer 36 units each trench Provide raised invert end plate at all end units except for end. of lowest trench provide closed end plate F) P1 A ,ABSORPTION TRENCH L-17N VIEW Engineering Designworks. Job # 980 1 SW, 04/03/98, Page 4 Revegetate all disturbed areas with native grosses 2! wide x 3' deep x 91' long trenches Maintain 6' minimum clearance between trenches I I)Infiltrator Equalizer 36 units each trencn-- 61 Maintain 4' clearance to bedrock ABSORPTION TRENCH PROFILE SECTION Engineering Designworks, Job # 980 1 SW" 04/03/98, Page 5 u3t76 LOT 79 3.797 ACRE 298 -- 960 ----------- — vAlosorpt;on trenches W- CRAMADA HR-L ROAD SITE PLAN -- scale Engineering Designworks, Job # 980 1 SW, 04/03/98, Page 6 RCy Romef, Governor patu 5i4wav0cf, Exeevwe Qirenor Dedic41ed to p.•etemnq and improving the healiA and m+uonment cf the people of Colorado A3G0 Cherry cteelt or. S. ? aboratorY 8uiiding 80222•' S 30 + 210 E. 1,1th Avenue Phone 003) 692.20oo Ditnvef, Colorado 80220-:716 i303) 691-4700 May ?7, 1996 Mr. Sin aransf:.eld District Manager Tnfiltra,`or Systems rnc. 1087 South Downing Street Denver, Co 30209 Dear Sim: i.. ti on 1^1. AUG 1- tondo Dcput.sur.t of PubUCH&I" usd Eaviront!'ment r have reviewed the literature and your calculations with respact to the infiltrator Equalizer 36 chamber. The Equalizer 36. is hereby approved for use _n Colorado in accordance with t1,e provisions of Section viII.C. of t•a Guidelines Cn Individual Sewage Disposal Systems. concur with your calculations reaardi:,g the absorptive area equivalence for the Equalizer 36 chamber. As per Your calculations the bottom area for each chanher unit is provides 24.99 square -fee - of absorptive area in a trench application and 20.8 square feet, in a bed system. Sidewall area would add an additional 6.94 square feet for a total absorptive area of 31.93 square feet per Equalizer 36 unit in a trench system. No additional credit would be available for Sidewall in bed designs. Therefore, tie Division hereby approves the Equalizer 36 chamber for use in Colorado at an equivalency of 31.93 square feet unit in a trench ccnfwqurat:on and 20.3 square f:,eet per unit in a bed cranfiguration• Fhese figures are aced on the design Specifications presented in your letter of March 4. '996. Use and equivalency approvals are subect tc tt:e accantance of sane by local health agencies. Sinc2r's�.y t Thoras Sennett -SOS Program Coordinator xc: Local Health Agencies Engineering Designworks, Job # 9801SW, 04/03/98, Page 7 _ ej w •" w rr{ lc Y Ji 7 'r1 r a s • `b cn al (i h_ lco �1 C iA*V4 SII if, O SY=-"vl= INC H!Qw we size the Eauafter 361'4 Chamber in Colorado Ecuafter 36T'A hcmbe3r Soecilfcafcns; Chamber'He ght a I ft Chamber Wldth = 1.83 ft C:hcu, , er Wert = 25 lbs. Chamber Ca;*c=fty = 63 gel - Open 80ttorn Area = 14 sgfttlf Cpen Sideawall Area.= 2.16 soft/If Invert Height = 9.9" Specificatians as recognized by Colorado Guidelines for trench contk,j=tlon; 30tt rr .area = 1.5 WIlf + .5 (sizing factory x 823 If = 24.99 soft SidewCil Area = 9.9" - 6.0" = 3.9" x 1.28 (sidewinder etfecpl = A.99 = 5 5" x 2 (sides► = 0" x 8.33 If = 6.94 soft 30ttorr - SiderwaO = 24.99 sgff + 6.94. sgft = 31.93'soft per S036TIA Bed applications are recognized in this manner. 30ttcrrs area = I.50 scSftllf = .6 (sizing factor} x 8.s"'T.. if = 2Q.8 soft per £C367U Engineering Designworks, Job /# 9801SW, 04/03/98, Page 9